20760145

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:130

約数の個数: 64

約数和(自身を含む): 33094656

約数和(自身を除く): 12334511

約数列:

[1, 5, 7, 17, 23, 35, 37, 41, 85, 115, 119, 161, 185, 205, 259, 287, 391, 595, 629, 697, 805, 851, 943, 1295, 1435, 1517, 1955, 2737, 3145, 3485, 4255, 4403, 4715, 4879, 5957, 6601, 7585, 10619, 13685, 14467, 16031, 22015, 24395, 25789, 29785, 33005, 34891, 53095, 72335, 80155, 101269, 112217, 128945, 174455, 180523, 244237, 506345, 561085, 593147, 902615, 1221185, 2965735, 4152029, 20760145]

約数ペア:

[(1, 20760145), (5, 4152029), (7, 2965735), (17, 1221185), (23, 902615), (35, 593147), (37, 561085), (41, 506345), (85, 244237), (115, 180523), (119, 174455), (161, 128945), (185, 112217), (205, 101269), (259, 80155), (287, 72335), (391, 53095), (595, 34891), (629, 33005), (697, 29785), (805, 25789), (851, 24395), (943, 22015), (1295, 16031), (1435, 14467), (1517, 13685), (1955, 10619), (2737, 7585), (3145, 6601), (3485, 5957), (4255, 4879), (4403, 4715)]